Taking a rental car on a ferry

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 5 min read

Putting a rental car on a ferry raises a question that doesn't come up with your own vehicle: does your rental agreement actually allow it? Many hire agreements are silent or restrictive on ferry travel by default, particularly where a sea crossing effectively takes the car out of the country or region it was rented in, and finding this out at the port rather than beforehand is a genuinely bad way to start a trip. Here's how to check, what to book, and what changes once the car itself is the thing going by sea rather than you.

Check the agreement before you book the crossing

Ferry travel with a hire car is often treated by rental companies the same way a land border crossing is — as something requiring prior notice and sometimes explicit permission, not something you can simply decide to do once you've already picked up the keys. This is especially true where the ferry route takes the car to a different country, but it can also apply to purely domestic sea crossings if the rental company's insurance or breakdown cover doesn't extend to the destination side of the crossing. Ask specifically, by name, about the exact route: "can I take this car on the Dover–Calais ferry" gets a clearer answer than "can I take it abroad."

Why rental companies care about this

The concerns are largely the same ones that govern crossing borders in a rental car generally: the company needs to be able to recover the vehicle if something goes wrong, its insurance is often structured by country or region, and breakdown cover arrangements may not extend to wherever the ferry lands. A car that breaks down on an island reachable only by sea can be a much more expensive and slower recovery than one that breaks down on a mainland motorway, and that risk is reflected in whether — and how — companies permit it.

What permission looks like

Where ferry travel is permitted, you'll typically need the same kind of documentation as any cross-border rental: written confirmation on the rental agreement or a separate authorisation letter naming the specific route or destination, and sometimes a surcharge covering the extended insurance or recovery arrangement. Carry this alongside the vehicle's registration document. At ferry check-in, staff are checking that your vehicle details match your booking, not your rental permissions — but if you're stopped at customs or border control on arrival, having the rental company's authorisation to hand avoids an awkward conversation about a car you may not obviously be entitled to have taken there.

Booking the vehicle onto the crossing

Once you've confirmed the rental agreement allows the route, booking the ferry itself works the same as for any car — you'll need the vehicle's registration, make, model and approximate length, and possibly height if the crossing has deck restrictions. Our general guide to taking a car on a ferry covers the booking process, check-in timing and what happens on the vehicle deck in full; the process itself doesn't differ for a rental car versus your own, only the underlying question of whether you're allowed to be doing it.

One detail specific to hire cars: double-check that the registration number on your ferry booking matches the actual car you're handed at the rental desk, not the model you originally booked online. Rental companies substitute vehicles for all sorts of reasons, and a ferry check-in that doesn't match your booking's registration can cause delays even when everything is otherwise in order.

Insurance on the crossing

Your rental car's CDW and any excess cover typically continue to apply while the vehicle is on the car deck, in the same way your own car insurance would, but always confirm rather than assume — particularly for longer overnight crossings or routes to destinations where the rental company's standard cover is known to be restricted. If you've bought a standalone excess policy separately from the rental company (see our guide to car hire insurance explained), check whether it covers the ferry-accessed destination specifically, since some policies exclude islands or countries reached only by sea even when they'd otherwise cover the mainland equivalent.

One-way ferry-and-drop-off combinations

If your plan involves picking up a car in one country, crossing by ferry, and dropping it off somewhere on the other side rather than bringing it back, you're combining a one-way rental with a cross-border ferry crossing — and both fees apply on top of each other, along with both sets of paperwork. This combination is available on some well-travelled ferry corridors (the Channel, Ireland to France, parts of the Baltic) through major companies, but it needs to be booked as exactly that from the outset — a one-way, cross-border, ferry-inclusive rental — rather than assembled from separate assumptions. Confirm the whole route in one conversation with the rental company before booking either the car or the crossing.

Frequently asked questions

Can I take any hire car on a ferry?

Not automatically — check your specific rental agreement first. Many companies require the same kind of prior notice and authorisation for ferry travel as they do for crossing a land border, particularly where the crossing reaches a different country or an island with separate insurance arrangements.

Does the rental company need to know which ferry I'm taking?

They need to know the route and destination at minimum — the specific sailing time usually isn't relevant to their authorisation, only which country or region the car is travelling to. Confirm this before booking the ferry, not after.

Is there an extra charge for taking a rental car on a ferry?

Sometimes, particularly if the crossing takes the car to a different country, in which case a cross-border surcharge similar to any other international rental may apply. A purely domestic ferry crossing within the same country may carry no extra rental company fee, though the ferry's own vehicle fare still applies.

What happens if I take a rental car on a ferry without permission?

The same consequences as any unauthorised border crossing in a hire car — it's a breach of the rental agreement and can void your CDW and excess cover for the trip. If anything happens to the car on the other side of the crossing, the rental company can charge the full cost to your card.